Re: Problems plotting in 3 dimensions

[Ethan M. <merritt@u.washington.edu>]

On Wednesday 23 June 2010 11:45:30 pm 松田七美男 wrote:
> Hi, Frank
> 
> I guess that in exp_210, exp_211, command as below causes curiosity.
> 
>   dummy b, u
> 
> If you leave it alone, b defined as parametric variable should have 
> default range [-10:10]. So, iteration [b = 1 : 500 : 1] does not work 
> correctly. Please comment it out and try again.

Good point.
Explicitly resetting a parametric dummy variable inside a plot command
could indeed lead to confusion.

On the other hand, the plot produced by deleting "dummy b,u" is
the same as the plot produced by leaving that command in place while
adding "set yrange [0:5]".  So another possible confusion is what
to expectat from auto-scaling a parametric plot.

	Ethan